CN103067037B - Wireless ad hoc network MESH communication module - Google Patents
Wireless ad hoc network MESH communication module Download PDFInfo
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- CN103067037B CN103067037B CN201210582627.3A CN201210582627A CN103067037B CN 103067037 B CN103067037 B CN 103067037B CN 201210582627 A CN201210582627 A CN 201210582627A CN 103067037 B CN103067037 B CN 103067037B
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Abstract
The invention discloses a wireless ad hoc network MESH communication module which comprises a signal reception circuit, a signal sending circuit and a microprocessor. The signal reception circuit comprises a signal processing unit and an analog-digital converter. An output end of the signal processing unit is connected with an analog signal input end of the analog-digital converter, and a digital signal output end of the analog-digital converter is connected with a signal collecting end of the microprocessor. The signal sending circuit comprises a digital analog converter and a signal emitting unit. An output end of the microprocessor is connected with an input end of the digital analog converter, and an output end of the digital analog converter is connected with the signal emitting unit. When the wireless ad hoc network MESH communication module receives a signal, noise is effectively avoided, the signal error rate is reduced, the times of signal distortion are reduced, signal to noise ration is improved, and effect and quality of signal receiving are improved. When the wireless ad hoc network MESH communication module sends the signal, signal strength is enhanced, signal transmission distance is prolonged, interference of two-time and multiple harmonics wave can be restrained by a pi type filter, and quality of a sent wireless signal is improved.
Description
Technical field
The present invention relates to a kind of wireless self-networking MESH communication module.
Background technology
Along with the develop rapidly of science and technology, the continuous propelling of information age, means of communication is also to diversified development.But still there are some drawbacks in the means of communication that in fact, current people generally adopt.Here is deficiency and the shortcoming of several means of communication and their existence generally used at present:
(1) cellular mobile communication networks
1. infrastructure is relied on: need between mobile terminal could realize communication by fixed base stations, base station is connected with key switching network by Wireline, adds communications cost;
2. mobile terminal does not possess routing function, and mobile terminal can only carry out data transmit-receive by fixed base stations, uses constraint larger;
3. star topology, certain link failure, service on a large scale will be interrupted, and Survivabilities of Networks is poor;
4. build, expand, maintenance cost is high;
5. when mobile terminal is static, message transmission rate can reach 2Mbit/s, but during mobile terminal high-speed mobile, message transmission rate only has 144kbit/s.
(2) trunked communication system
1. similar with cellular mobile communication networks, belong to the network having connection, rely on infrastructure;
2. be generally dedicated network, based on speech business.
(3) WLAN (wireless local area network) WLAN
1. mobile node is equipped with wireless network card, is connected, depends on the network infrastructure of similar base station or access point by AP access point with fixed network;
2. concerning network layer, be single-hop networks, can not forwarding data;
3. can realize high-speed communication (802.11b:11M or 802.11a:54M) in limited covering scope (hundreds of rice), but coverage is comparatively limited.
(4) VSAT satellite communication system
1. coverage is the widest, but cost is high, transmission bandwidth is limited, transmission delay is large.
(5) communication in moving
1. rely on satellite, the rainy day or cloud layer thick and heavy in, or just easily to lose efficacy in the place that particular surroundings and existence are blocked, occurred communication failure;
2. antenna is too heavy, uses and carries all very inconvenient, must be placed on the mobile device such as automobile, steamer;
What 3. there is one period of long period seeks star process, and cannot drop into application fast, the use of a lot of occasion is all restricted.
In sum, current existing communication network be mostly based on the reliable and stable communications infrastructure on, once these communications infrastructures are destroyed, conventional means of communication is all no longer feasible.And be exactly often in such, keep communication reliably to seem particularly important.Trunked communication system is except relying on infrastructure, and the network bandwidth also has considerable restraint, uses narrow-band technologies more, about bandwidth 30K, about message transmission rate 16Kbps, this just makes its data transmission capabilities greatly limited.Therefore, under some special occasions, existing means of communication can't meet the demand of communication, and maximum problem is exactly that survival ability is too poor, is easily destroyed fast.
Mobile ad hoc network adopts distributed computing technology, does not have the management of center control nodes, does not rely on other any wired communications infrastructures, for the network service under the extreme case that covers without public network provides the Means of Ensuring of necessity.When terminal equipment switches on power and opens, the communication terminal that communication terminal can close on around automatic search or repeater, automatic component communication network after searching, a communication node of network is communicated with other nodes by the automatic relay of neighbor node, in network, information source can select nearest effective communication path voluntarily according to the state of each node in network and position simultaneously, when in network during some nodes break down, other nodes can continue communication; In addition, each node can move at any time, change location, also can increase and decrease the quantity of node at any time.At present, Wireless Ad Hoc Networks, with its outstanding every characteristics and advantages, has obtained and has applied comparatively widely and promote.
Wireless self-networking is the advanced technology coming from Technology on Martial Wireless Communication field, and for its communication module, Signal reception and disposal ability decide its communication performance.There is following problem in existing MESH communication module: the signal receiving circuit ubiquity linearity is low, dynamic range is not enough, input ability, the error rate is high, distorted signals situation serious, and antijamming capability is poor, the problems such as phase noise is high, spurious reduction weak effect, communication efficiency difference; The transmitting transmission range of signal sending circuit is shorter, and when signal wireless is launched, spurious emissions interference and secondary repeatedly radio frequency interference phenomenon are comparatively serious, make sent out signal effect poor, can not allow transtation mission circuit long-term work under transmission state.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, the signal quality provide that a kind of receiving circuit input ability is strong, the error rate is low, distorted signals is few, antijamming capability is strong, spurious reduction is effective, receiving is good, the wireless self-networking MESH communication module that transtation mission circuit transmission range is far away, good wave filtering effect, noise jamming is few, signal to noise ratio is high communication efficiency are good.
The object of the invention is to be achieved through the following technical solutions: wireless self-networking MESH communication module, comprise casing and movement circuit, movement circuit comprises Signal reception transtation mission circuit, and described Signal reception transtation mission circuit is made up of signal receiving circuit, signal sending circuit and microcontroller, signal receiving circuit comprises signal processing unit and analog to digital converter, signal processing unit comprises radio-frequency filter, low noise amplifier, local oscillation signal generator I, frequency mixer I, intermediate-frequency filter and intermediate frequency amplifier, the output of radio-frequency filter is connected with an input of frequency mixer by low noise amplifier, another input of frequency mixer is connected with the output of local oscillation signal generator I, the output of frequency mixer I is connected with the input end of analog signal of analog to digital converter with intermediate frequency amplifier by intermediate-frequency filter successively, the digital signal output end of analog to digital converter is connected with the signals collecting end of microcontroller, described local oscillation signal generator I comprises low pass filter LPF1, phase discriminator PD, low pass filter LPF2, voltage controlled oscillator VCO, amplifier LNA, low pass filter LPF3 and the power splitter and a high pass filter HPF that connect in turn, the input of high pass filter HPF is connected with voltage controlled oscillator VCO, and its output is connected with the local oscillation signal input of phase discriminator and forms phase-locked loop.
Signal sending circuit comprises digital to analog converter and signal transmitter unit, signal transmitter unit comprises local oscillation signal generator II, frequency mixer II, power amplifier and pi type filter, the digital signal input end of digital to analog converter is connected with the signal output part of microcontroller, the output of digital to analog converter and local oscillation signal generator II is connected with the input of frequency mixer II respectively, and the output of frequency mixer II is connected with the input of pi type filter by power amplifier; Described pi type filter comprises electric capacity C1, electric capacity C2, electric capacity C3, inductance L 1 and inductance L 2, electric capacity C1 is connected with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 2, the other end of inductance L 1 is also by electric capacity C2 ground connection, the other end of inductance L 2 is connected with transmitting antenna, and the other end of inductance L 2 is also by electric capacity C3 ground connection.
Pi type filter only allows the resonance frequency of resonator in frequency mixer pass through, suppress its secondary and multiple harmonic, efficiently solve interference and secondary, the multiple harmonic radio frequency interference of spurious emissions when wireless signal sends, improve the stability of signal sending circuit work, make signal sending circuit can be in operating state for a long time, meet system requirements.And less demanding to circuit components, correspondingly reduce the cost of circuit design.
During MESH communication module Received signal strength of the present invention, signal antenna is connected with the input of radio-frequency filter.
When MESH communication module of the present invention sends signal, the output of pi type filter is connected with signal antenna.
Phase discriminator of the present invention adopts HMC704 chip.
The invention has the beneficial effects as follows:
(1) in reception of wireless signals process, radiofrequency signal is successively after the gain again of the gain of the filtering of radio-frequency filter, low noise amplifier, the intermediate frequency mixing of frequency mixer, the filtering again of intermediate-frequency filter and intermediate frequency amplifier, largely reducing the signal disturbing of adjacent channel, effectively prevent noise, reduce signal error rate, decrease the situation of distorted signals, improve signal to noise ratio, improve effect and the quality of Signal reception;
(2) in wireless signal process of transmitting, the signal after digital-to-analogue conversion carries out power amplification by power amplifier to it, enhances signal strength signal intensity, thus extends the transmission range of wireless signal; Pi type filter can carry out filtering to signal effectively, inhibits the interference of secondary, multiple harmonic, improves the quality of the wireless signal sent out.
Accompanying drawing explanation
Fig. 1 is signal receiving circuit structural schematic block diagram of the present invention;
Fig. 2 is the circuit theory diagrams of local oscillation signal generator I of the present invention;
Fig. 3 is signal sending circuit structural schematic block diagram of the present invention;
Fig. 4 is the circuit theory diagrams of pi type filter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
Wireless self-networking MESH communication module, comprises casing and movement circuit, and movement circuit comprises Signal reception transtation mission circuit, and described Signal reception transtation mission circuit is made up of signal receiving circuit, signal sending circuit and microcontroller.
As shown in Figure 1, signal receiving circuit comprises signal processing unit and analog to digital converter, signal processing unit comprises radio-frequency filter, low noise amplifier, local oscillation signal generator I, frequency mixer I, intermediate-frequency filter and intermediate frequency amplifier, the output of signal antenna is connected with the input of radio-frequency filter, the output of radio-frequency filter is connected with an input of frequency mixer by low noise amplifier, another input of frequency mixer is connected with the output of local oscillation signal generator I, the output of frequency mixer I is connected with the input end of analog signal of analog to digital converter with intermediate frequency amplifier by intermediate-frequency filter successively, the digital signal output end of analog to digital converter is connected with the signals collecting end of microcontroller.
As shown in Figure 2, local oscillation signal generator I comprises the low pass filter LPF1, the phase discriminator PD(that connect in turn and adopts HMC704 chip), low pass filter LPF2, voltage controlled oscillator VCO (adopting V844ME02-LF chip), amplifier LNA(adopt ERA-5SM chip), low pass filter LPF3(adopts LFCN-3400 chip) and power splitter and a high pass filter HPF, the input of high pass filter HPF is connected with voltage controlled oscillator VCO, and its output is connected with the local oscillation signal input of phase discriminator and forms phase-locked loop.HMC704 chip adopts integral mode, and during 10M phase demodulation, make an uproar=-233+10Log at the end
fpd=-233+70=-163 dBc/Hz@10kHz, practice is calculated by worsening 3dB.If reference source phase noise is better than chip, then upper noise limit is determined by chip, and when exporting 3550M, frequency multiplication number of times is 355 times, so phase noise=-160+20log during output 3550
n=-160+20log
355 =-109 dBc/Hz 10kHz, because adopting 10M phase demodulation, the spuious point of integer braid of PLL appears at from the far place of loop bandwidth, so can filter very clean, spuiously can easily accomplish≤-75dBc.
As shown in Figure 3, signal sending circuit comprises digital to analog converter and signal transmitter unit, signal transmitter unit comprises local oscillation signal generator II, frequency mixer II, power amplifier and pi type filter, the digital signal input end of digital to analog converter is connected with the signal output part of microcontroller, the output of digital to analog converter and local oscillation signal generator II is connected with the input of frequency mixer II respectively, and the output of frequency mixer II is connected with the input of pi type filter by power amplifier.The output of pi type filter is connected with signal antenna.
Its course of work is as follows: the data message that the needs through screening send is sent in digital to analog converter by microcontroller, by digital to analog converter, this data message to be sent is converted to analog radio-frequency signal, analog radio-frequency signal amplifies through frequency mixer II mixing (local oscillation signal that the radiofrequency signal of input and local oscillation signal generator II produce carries out mixing), power amplifier gain and after pi type filter filtering, is sent by high-quality communication signal transmissions to signal antenna successively.
Wherein, digital to analog converter DAC is the device discrete signal of binary digit amount form being converted with standard volume to the analog quantity being benchmark, and D/A converter is made up of four parts substantially: weighted resistance network, operational amplifier, reference power supply and analog switch.The digital-to-analogue conversion principle of digital to analog converter is as follows: digital quantity to combine by numerical digit with code and represents, for there being weighted code, every code has certain position power.In order to digital quantity is converted to analog quantity, just must converts the code of every 1 to corresponding analog quantity by the size that it is weighed, then these analog quantitys are added, the total analog quantity be directly proportional to digital quantity can be obtained, thus realize digital-to-analogue conversion.D/A converter is made up of digital register, analog electronic switching circuit, decoding network, summing circuit and reference voltage, digital quantity inputs in serial or parallel mode, be stored in digital register, each Digital sum that digital register exports controls the simulant electronic switch of corresponding position respectively, make number be 1 position power network in place on produce the current value that is directly proportional to its weights, by summing circuit, various weights are added again, finally obtain the analog quantity that digital quantity is corresponding.
As shown in Figure 4, pi type filter comprises electric capacity C1, electric capacity C2, electric capacity C3, inductance L 1 and inductance L 2, electric capacity C1 is connected with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 2, the other end of inductance L 1 is also by electric capacity C2 ground connection, the other end of inductance L 2 is connected with transmitting antenna, and the other end of inductance L 2 is also by electric capacity C3 ground connection.
Pi type filter only allows the resonance frequency of resonator in frequency mixer pass through, suppress its secondary and multiple harmonic, efficiently solve interference and secondary, the multiple harmonic radio frequency interference of spurious emissions when wireless signal sends, improve the stability of transtation mission circuit work, make transtation mission circuit can be in operating state for a long time, meet system requirements.And less demanding to circuit components, correspondingly reduce the cost of circuit design.
Claims (3)
1. wireless self-networking MESH communication module, comprises casing and movement circuit, and movement circuit comprises Signal reception transtation mission circuit, it is characterized in that: described Signal reception transtation mission circuit is made up of signal receiving circuit, signal sending circuit and microcontroller;
Signal receiving circuit comprises signal processing unit and analog to digital converter, signal processing unit comprises radio-frequency filter, low noise amplifier, local oscillation signal generator I, frequency mixer I, intermediate-frequency filter and intermediate frequency amplifier, the output of radio-frequency filter is connected with an input of frequency mixer by low noise amplifier, another input of frequency mixer is connected with the output of local oscillation signal generator I, the output of frequency mixer I is connected with the input end of analog signal of analog to digital converter with intermediate frequency amplifier by intermediate-frequency filter successively, the digital signal output end of analog to digital converter is connected with the signals collecting end of microcontroller, described local oscillation signal generator I comprises low pass filter LPF1, phase discriminator PD, low pass filter LPF2, voltage controlled oscillator VCO, amplifier LNA, low pass filter LPF3 and the power splitter and a high pass filter HPF that connect in turn, the input of high pass filter HPF is connected with voltage controlled oscillator VCO, and its output is connected with the local oscillation signal input of phase discriminator and forms phase-locked loop pll, described phase discriminator adopts HMC704 chip, and HMC704 chip adopts integral mode, and during 10M phase demodulation, make an uproar=-233+10Logfpd=-233+70=-163 dBc/Hz@10kHz at the end, and practice is calculated by worsening 3dB, if reference source phase noise is better than chip, then upper noise limit is determined by chip, when exporting 3550M, frequency multiplication number of times is 355 times, so phase noise=-160+20logn=-160+20log355=-109 dBc/Hz 10kHz when exporting 3550M, because adopting 10M phase demodulation, the spuious point of integer braid of PLL appears at from the far place of loop bandwidth, so can filter very clean, spuiously can easily accomplish≤-75dBc,
Signal sending circuit comprises digital to analog converter and signal transmitter unit, signal transmitter unit comprises local oscillation signal generator II, frequency mixer II, power amplifier and pi type filter, the digital signal input end of digital to analog converter is connected with the signal output part of microcontroller, the output of digital to analog converter and local oscillation signal generator II is connected with the input of frequency mixer II respectively, and the output of frequency mixer II is connected with the input of pi type filter by power amplifier; Described pi type filter comprises electric capacity C1, electric capacity C2, electric capacity C3, inductance L 1 and inductance L 2, electric capacity C1 is connected with one end of inductance L 1, the other end of inductance L 1 is connected with one end of inductance L 2, the other end of inductance L 1 is also by electric capacity C2 ground connection, the other end of inductance L 2 is connected with transmitting antenna, and the other end of inductance L 2 is also by electric capacity C3 ground connection;
Pi type filter only allows the resonance frequency of resonator in frequency mixer pass through, suppress its secondary and multiple harmonic, effectively solve interference and secondary, the multiple harmonic radio frequency interference of spurious emissions when wireless signal sends, improve the stability of transtation mission circuit work, make transtation mission circuit can be in operating state for a long time, meet system requirements; Less demanding to circuit components, the cost of circuit design is low;
Digital to analog converter is made up of digital register, analog electronic switching circuit, decoding network, summing circuit and reference voltage, digital quantity inputs in serial or parallel mode, be stored in digital register, each Digital sum that digital register exports controls the simulant electronic switch of corresponding position respectively, make number be 1 position power network in place on produce the current value that is directly proportional to its weights, by summing circuit, various weights are added again, finally obtain the analog quantity that digital quantity is corresponding.
2. wireless self-networking MESH communication module according to claim 1, it is characterized in that: during MESH communication module Received signal strength, signal antenna is connected with the input of radio-frequency filter.
3. wireless self-networking MESH communication module according to claim 1, is characterized in that: when MESH communication module sends signal, the output of described pi type filter is connected with signal antenna.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262236A (en) * | 2008-04-22 | 2008-09-10 | 中科院嘉兴中心微系统所分中心 | A RF device of single-side belt digital short wave receiver for sensor network gateway |
| CN102694556A (en) * | 2012-05-22 | 2012-09-26 | 成都九华圆通科技发展有限公司 | Second local oscillator circuit of ultra short wave receiver with low-power consumption and high phase noise index |
| CN102710267A (en) * | 2012-05-22 | 2012-10-03 | 成都九华圆通科技发展有限公司 | First local oscillation circuit of ultrashort wave receiver |
| CN102752010A (en) * | 2011-04-21 | 2012-10-24 | 沈阳中科微电子有限公司 | Transceiving module used for communication base stations |
| CN203104434U (en) * | 2012-12-28 | 2013-07-31 | 成都泰格微波技术股份有限公司 | Wireless ad hoc network MESH communication module |
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- 2012-12-28 CN CN201210582627.3A patent/CN103067037B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262236A (en) * | 2008-04-22 | 2008-09-10 | 中科院嘉兴中心微系统所分中心 | A RF device of single-side belt digital short wave receiver for sensor network gateway |
| CN102752010A (en) * | 2011-04-21 | 2012-10-24 | 沈阳中科微电子有限公司 | Transceiving module used for communication base stations |
| CN102694556A (en) * | 2012-05-22 | 2012-09-26 | 成都九华圆通科技发展有限公司 | Second local oscillator circuit of ultra short wave receiver with low-power consumption and high phase noise index |
| CN102710267A (en) * | 2012-05-22 | 2012-10-03 | 成都九华圆通科技发展有限公司 | First local oscillation circuit of ultrashort wave receiver |
| CN203104434U (en) * | 2012-12-28 | 2013-07-31 | 成都泰格微波技术股份有限公司 | Wireless ad hoc network MESH communication module |
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